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September 20, 2014

September 20, 2014

Posted by **annaiiz** on Wednesday, April 1, 2009 at 9:42pm.

question is: 1-2i+i^3/1+i

this is what i did:

1-2i+i(-i)/1+i

1-2i-i^2/1+i

1-2i-i(-1)/1+i

1-2i+i/1+i

1-3i/1+i*1-i/1-i

1-i-3i+3i^2/1-i+i-i^2

1-i-3i+3(-1)/1-i^2

1-i-3i-3/1-(-1)

1-4i-3/2

-2-4i/2

my answer is -2i-1

is that right?

- math help!!! -
**annaiiz**, Wednesday, April 1, 2009 at 9:55pmok i have to divide complex numbers:

question is: 1-2i+i^3/1+i

this is what i did:

1-2i+i(-i)/1+i

1-2i-i^2/1+i

1-2i-i(-1)/1+i

1-2i+i/1+i

1-3i/1+i*1-i/1-i

1-i-3i+3i^2/1-i+i-i^2

1-i-3i+3(-1)/1-i^2

1-i-3i-3/1-(-1)

1-4i-3/2

-2-4i/2

my answer is -2i-1

is that right?

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